Graham Prewett, Inc. continues to grow and is one of the largest commercial, industrial and public works companies to provide this scope of work in the Central Valley. GPI’s vision for the future is to continue building a team that combines the enthusiasm and education of new employees with the seasoned experience of the veterans of our staff, and to work together to carry on the fine tradition of Graham Prewett, Inc.

Graham Prewett, Inc. is signatory to the Carpenters and Roofers unions and holds the following licenses from the California Contractors State License Board:

    A General Engineering Contractor 
    B General Building Contractor 
    C22 Asbestos Abatement Contractor
    C33 Painting & Decorating Contractor
    C39 Roofing Contractor 
    C43 Sheet Metal Contractor